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<http://webisa.webdatacommons.org/106157162>	<http://www.w3.org/ns/prov#value>	"Google Inc.Identifying negative keywords associated with advertisementsUS8229957Apr 22, 2005Jul 24, 2012Google, Inc.Categorizing objects, such as documents and/or clusters, with respect to a taxonomy and data structures derived from such categorizationUS8239263Sep 5, 2003Aug 7, 2012Google Inc.Identifying and/or blocking ads such as document-specific competitive adsUS8239418Feb 15, 2012Aug 7, 2012G" .
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